Improvement in sash-balances



.TED STATES' PA'rEN Erica JOSEPH SOHATER, OF SYRAOUSE, NEW YORK, ASSIGNOR OF ONE-HALF HIS RIGHT TO PHILLIP SOHELLER, OF SAME PLAGE.

IMP'ROVEINIENT IN SASH-BALANCES.

Specification forming part of Letters Patent No. 183,514, dated October 24, 1876; application led March 17, 1876.

To all whom it may concern:

Beit known that I, JosEPH SGHATER, of

Syracuse, in the county of Onondaga, in the4 State of New York, have invented a new and useful Irnprovementin Sash-Balances, of which the following, taken in connection with the accompanying drawing, is a full, clear, and exact description.

My invention relates to improvements in that class of sash-balances in which the sash is counterpoised by the action of a spring actuating a pinion engaging a rack in the side of the sash; and it consists in an improved construction and combination, with the pinion, of novel and simple devices for attaching the spring, by which improvements the pinion is braced and steadied in its movement, the width of its inclosing-case considei'ably-diminished, and the attachment of the pinion thereto, and its removal therefrom for repairs, greatly facilitated, as will behereinafter more fully described, and definitely claimed.

The invention is fully illustrated in the accompanying drawing, wherein Figure 1 is a front view of a window with my improvements applied. Fig. 2 is an enlarged transverse section on line a; x, in Fig. l; and Figs. 3, 4, 5, 6, and 7 are enlarged detail views.

Similar letters of reference indicate corresponding parts.

A A represent the upper and lower sash of a window; B, the window-casing. The sash is provided on one or both sides with a groove, a, in which is attached a rack, b, extending the entire height of the sash. c is a toothed pinion engaging the said rack. To one side of the pinion is rigidly attached a projecting hollow hub, tl, and an annular flange, e, of the same height, and forming a case for the coil-spring s, the outer end of which is hooked into an opening or slot inthe annular tlange e, and the inner end is hooked into and held by a slot in the collar c'. This collar (best seen in Fig. 7, which is a Viewfrom the under side) is fitted loosely l to the hub el and attached to a plate, f, which has a hole in the center of the collar for the pin h. k is a case, having its two parallel sides a proper distance apart, to contain and steady the pinion c, with its annular flange e.

VOne side of the case k is provided on the in-y withdrawal of the plate f. The pinion, with its spring, is attached to the casek by inserting it through. the openl side of the case and passing the pin h through the case, plate f, hub d, and pinion c, as best seen in Fig. 5 of the drawing, which is a section on line y y in Fig. 3.

Before 'connecting the rack with the pin-- ion, the spring s is wound up to the proper tension, and retained in that position by inserting the pin n, which passes through a plate, 0, attached to the outside of the window-casing, and through the said casing and case lo ata point to bring it between two teethot" the pinion.

The outer end of the pin n is provided with a knob or suitable handle, by which it is forced in or out. When forced inward, the pin prevents the pinion cfrom turning, and thus locks the sash at any height or point. By drawing it outward, it releases the pinion and allows the sash to be moved up or down. r is friction-roller placed in the window-frame, opposite the spring-balance before described, to prevent the sash from binding on the casing.

On heavy windows the rack and pinion are to be applied on both sides'and the frictionrollers may be dispensed with.

I am aware that the rack and spring-pinion have been employed in sash-balances before this, and I therefore do not claim the same, broadly.

What I claim as new, and desire to secure by Letters Patent, is-

The combination of the pinion c, provided with hollow huh d, and annular iiange c, coilspring s, placed within and attached at the outer end to said ange, collar t', holding inner end of the spring, plate f attached to collare', oase 70, Ihm/ing recess Z and pin lg, all attestingwitnessesf at Syracuse, in the counoonstructed and `arranged as describedand tyfof-Onondaga and State of New `York, this shown, in combination with the rack b and 14th day of March, 1876.

spring-pin n, as and for the purpose set i JOSEPH SCHATER. [1.. 5.] forth. Witnesses In testimony whereof I have signed `my name yJON.` CURT.` A. LIMA,

and affixed my seal in the presence of two GHOLMSTRUHJI'. 

